Document Detail

Hydrogen sulfide reduces mRNA and protein levels of beta-site amyloid precursor protein cleaving enzyme 1 in PC12 cells.
MedLine Citation:
PMID:  21095213     Owner:  NLM     Status:  In-Process    
Hydrogen sulfide (H(2)S) is now identified as a new neuromodulator. Increasing evidence suggest that H(2)S may play an important role in the progression of Alzheimer's disease (AD). The aim of the present study is to investigate the effects of H(2)S on beta-site amyloid precursor protein cleaving enzyme 1 (BACE-1) expression and amyloid beta (Aβ) secretion in PC12 cells. The levels of BACE-1 mRNA were measured by quantitative polymerase chain reaction analysis. BACE-1 protein levels were assessed by Western blot. Cellular culture medium levels of Aβ1-42 were analyzed by ELISA. We found that sodium hydrosulfide (NaHS), a H(2)S donor, decreased BACE-1 mRNA and protein levels and Aβ1-42 release. Furthermore, NaHS promoted the phosphorylation of Akt and ERK but not JNK or p38 MAPK. However, the effects of NaHS on BACE-1 expression and Aβ1-42 secretion were abolished by inhibitors of phosphatidylinositol 3-kinase (PI3-K), but not of mitogen-activated protein kinase kinases (MEK). Our data indicate that H(2)S reduces BACE-1 expression in PC12 cells via activation of PI3-K/Akt signaling pathways. H(2)S releasing drugs may have therapeutic potential in AD patients.
Hua Zhang; Ying Gao; Fengli Zhao; Zhengwei Dai; Tao Meng; Shengfen Tu; Yong Yan
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-11-21
Journal Detail:
Title:  Neurochemistry international     Volume:  58     ISSN:  1872-9754     ISO Abbreviation:  Neurochem. Int.     Publication Date:  2011 Feb 
Date Detail:
Created Date:  2011-01-10     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8006959     Medline TA:  Neurochem Int     Country:  England    
Other Details:
Languages:  eng     Pagination:  169-75     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 Elsevier Ltd. All rights reserved.
Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, No. 1 Youyi Road, Chongqing 400016, China.
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